<?php
/* Copyright (C) 2004-2005  Rodolphe Quiedeville    <rodolphe@quiedeville.org>
 * Copyright (C) 2004-2015  Laurent Destailleur     <eldy@users.sourceforge.net>
 * Copyright (C) 2005       Marc Barilley / Ocebo   <marc@ocebo.com>
 * Copyright (C) 2005-2012  Regis Houssin           <regis.houssin@capnetworks.com>
 * Copyright (C) 2013-2014  Juanjo Menent           <jmenent@2byte.es>
 * Copyright (C) 2014       Marcos García           <marcosgdf@gmail.com>
 * Copyright (C) 2015-2016  Raphaël Doursenaud      <rdoursenaud@gpcsolutions.fr>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program. If not, see <http://www.gnu.org/licenses/>.
 */

/**
 *	\file       htdocs/install/check.php
 *	\ingroup    install
 *	\brief      Test if file conf can be modified and if does not exists, test if install process can create it
 */
include_once 'inc.php';

global $langs;

$err = 0;
$allowinstall = 0;
$allowupgrade = false;
$checksok = 1;

$setuplang=GETPOST("selectlang",'',3)?GETPOST("selectlang",'',3):$langs->getDefaultLang();
$langs->setDefaultLang($setuplang);

$langs->load("install");

// Now we load forced value from install.forced.php file.
$useforcedwizard=false;
$forcedfile="./install.forced.php";
if ($conffile == "/etc/dolibarr/conf.php") $forcedfile="/etc/dolibarr/install.forced.php";
if (@file_exists($forcedfile)) {
	$useforcedwizard = true;
	include_once $forcedfile;
}

dolibarr_install_syslog("--- check: Dolibarr install/upgrade process started");


/*
 *	View
 */

pHeader('','');     // No next step for navigation buttons. Next step is defined by clik on links.


//print "<br>\n";
//print $langs->trans("InstallEasy")."<br><br>\n";

print '<h3>'.$langs->trans("MiscellaneousChecks").":</h3>\n";

// Check browser
$useragent=$_SERVER['HTTP_USER_AGENT'];
if (! empty($useragent))
{
    $tmp=getBrowserInfo($_SERVER["HTTP_USER_AGENT"]);
    $browserversion=$tmp['browserversion'];
    $browsername=$tmp['browsername'];
    if ($browsername == 'ie' && $browserversion < 7) print '<img src="../theme/eldy/img/warning.png" alt="Error"> '.$langs->trans("WarningBrowserTooOld")."<br>\n";
}


// Check PHP version
$arrayphpminversionerror = array(5,3,0);
$arrayphpminversionwarning = array(5,3,0);
if (versioncompare(versionphparray(),$arrayphpminversionerror) < 0)        // Minimum to use (error if lower)
{
	print '<img src="../theme/eldy/img/error.png" alt="Error"> '.$langs->trans("ErrorPHPVersionTooLow", versiontostring($arrayphpminversionerror));
	$checksok=0;	// 0=error, 1=warning
}
else if (versioncompare(versionphparray(),$arrayphpminversionwarning) < 0)    // Minimum supported (warning if lower)
{
    print '<img src="../theme/eldy/img/warning.png" alt="Error"> '.$langs->trans("ErrorPHPVersionTooLow",versiontostring($arrayphpminversionwarning));
    $checksok=0;	// 0=error, 1=warning
}
else
{
	print '<img src="../theme/eldy/img/tick.png" alt="Ok"> '.$langs->trans("PHPVersion")." ".versiontostring(versionphparray());
}
if (empty($force_install_nophpinfo)) print ' (<a href="phpinfo.php" target="_blank">'.$langs->trans("MoreInformation").'</a>)';
print "<br>\n";


// Check PHP support for $_POST
if (! isset($_GET["testget"]) && ! isset($_POST["testpost"]))
{
	print '<img src="../theme/eldy/img/warning.png" alt="Warning"> '.$langs->trans("PHPSupportPOSTGETKo");
	print ' (<a href="'.$_SERVER["PHP_SELF"].'?testget=ok">'.$langs->trans("Recheck").'</a>)';
	print "<br>\n";
	$checksok=0;
}
else
{
	print '<img src="../theme/eldy/img/tick.png" alt="Ok"> '.$langs->trans("PHPSupportPOSTGETOk")."<br>\n";
}


// Check if sessions enabled
if (! function_exists("session_id"))
{
	print '<img src="../theme/eldy/img/error.png" alt="Error"> '.$langs->trans("ErrorPHPDoesNotSupportSessions")."<br>\n";
	$checksok=0;
}
else
{
	print '<img src="../theme/eldy/img/tick.png" alt="Ok"> '.$langs->trans("PHPSupportSessions")."<br>\n";
}


// Check if GD supported (we need GD for image conversion)
if (! function_exists("imagecreate"))
{
	$langs->load("errors");
	print '<img src="../theme/eldy/img/warning.png" alt="Error"> '.$langs->trans("ErrorPHPDoesNotSupportGD")."<br>\n";
	// $checksok=0;		// If image ko, just warning. So check must still be 1 (otherwise no way to install)
}
else
{
	print '<img src="../theme/eldy/img/tick.png" alt="Ok"> '.$langs->trans("PHPSupportGD")."<br>\n";
}


// Check if Curl supported
if (! function_exists("curl_init"))
{
    $langs->load("errors");
    print '<img src="../theme/eldy/img/warning.png" alt="Error"> '.$langs->trans("ErrorPHPDoesNotSupportCurl")."<br>\n";
    // $checksok=0;		// If image ko, just warning. So check must still be 1 (otherwise no way to install)
}
else
{
    print '<img src="../theme/eldy/img/tick.png" alt="Ok"> '.$langs->trans("PHPSupportCurl")."<br>\n";
}


// Check if UTF8 supported
if (! function_exists("utf8_encode"))
{
	$langs->load("errors");
	print '<img src="../theme/eldy/img/warning.png" alt="Error"> '.$langs->trans("ErrorPHPDoesNotSupportUTF8")."<br>\n";
	// $checksok=0;		// If image ko, just warning. So check must still be 1 (otherwise no way to install)
}
else
{
	print '<img src="../theme/eldy/img/tick.png" alt="Ok"> '.$langs->trans("PHPSupportUTF8")."<br>\n";
}



// Check memory
$memrequiredorig='64M';
$memrequired=64*1024*1024;
$memmaxorig=@ini_get("memory_limit");
$memmax=@ini_get("memory_limit");
if ($memmaxorig != '')
{
	preg_match('/([0-9]+)([a-zA-Z]*)/i',$memmax,$reg);
	if ($reg[2])
	{
		if (strtoupper($reg[2]) == 'G') $memmax=$reg[1]*1024*1024*1024;
		if (strtoupper($reg[2]) == 'M') $memmax=$reg[1]*1024*1024;
		if (strtoupper($reg[2]) == 'K') $memmax=$reg[1]*1024;
	}
	if ($memmax >= $memrequired || $memmax == -1)
	{
		print '<img src="../theme/eldy/img/tick.png" alt="Ok"> '.$langs->trans("PHPMemoryOK",$memmaxorig,$memrequiredorig)."<br>\n";
	}
	else
	{
		print '<img src="../theme/eldy/img/warning.png" alt="Warning"> '.$langs->trans("PHPMemoryTooLow",$memmaxorig,$memrequiredorig)."<br>\n";
	}
}


// If config file present and filled
clearstatcache();
if (is_readable($conffile) && filesize($conffile) > 8)
{
	dolibarr_install_syslog("check: conf file '" . $conffile . "' already defined");
	$confexists=1;
	include_once $conffile;

	$databaseok=1;
	if ($databaseok)
	{
		// Already installed for all parts (config and database). We can propose upgrade.
		$allowupgrade=true;
	}
	else
	{
		$allowupgrade=false;
	}
}
else
{
	// If not, we create it
	dolibarr_install_syslog("check: we try to create conf file '" . $conffile . "'");
	$confexists=0;

	// First we try by copying example
	if (@copy($conffile.".example", $conffile))
	{
		// Success
		dolibarr_install_syslog("check: successfully copied file " . $conffile . ".example into " . $conffile);
	}
	else
	{
		// If failed, we try to create an empty file
		dolibarr_install_syslog("check: failed to copy file " . $conffile . ".example into " . $conffile . ". We try to create it.", LOG_WARNING);

		$fp = @fopen($conffile, "w");
		if ($fp)
		{
			@fwrite($fp, '<?php');
			@fputs($fp,"\n");
			fclose($fp);
		}
		else dolibarr_install_syslog("check: failed to create a new file " . $conffile . " into current dir " . getcwd() . ". Please check permissions.", LOG_ERR);
	}

	// First install, we can't upgrade
	$allowupgrade=false;
}



// File is missng and can't be created
if (! file_exists($conffile))
{
	print '<img src="../theme/eldy/img/error.png" alt="Error"> '.$langs->trans("ConfFileDoesNotExistsAndCouldNotBeCreated",$conffiletoshow);
	print "<br><br>";
	print $langs->trans("YouMustCreateWithPermission",$conffiletoshow);
	print "<br><br>";

	print $langs->trans("CorrectProblemAndReloadPage",$_SERVER['PHP_SELF'].'?testget=ok');
	$err++;
}
else
{
	// File exists but can't be modified
	if (!is_writable($conffile))
	{
		if ($confexists)
		{
			print '<img src="../theme/eldy/img/tick.png" alt="Ok"> '.$langs->trans("ConfFileExists",$conffiletoshow);
		}
		else
		{
			print '<img src="../theme/eldy/img/tick.png" alt="Ok"> '.$langs->trans("ConfFileCouldBeCreated",$conffiletoshow);
		}
		print "<br>";
		print '<img src="../theme/eldy/img/tick.png" alt="Warning"> '.$langs->trans("ConfFileIsNotWritable",$conffiletoshow);
		print "<br>\n";

		$allowinstall=0;
	}
	// File exists and can be modified
	else
	{
		if ($confexists)
		{
			print '<img src="../theme/eldy/img/tick.png" alt="Ok"> '.$langs->trans("ConfFileExists",$conffiletoshow);
		}
		else
		{
			print '<img src="../theme/eldy/img/tick.png" alt="Ok"> '.$langs->trans("ConfFileCouldBeCreated",$conffiletoshow);
		}
		print "<br>";
		print '<img src="../theme/eldy/img/tick.png" alt="Ok"> '.$langs->trans("ConfFileIsWritable",$conffiletoshow);
		print "<br>\n";

		$allowinstall=1;
	}
	print "<br>\n";

	// Requirements ok, we display the next step button
	if ($checksok)
	{
		$ok=0;

		// Try to create db connection
		if (file_exists($conffile))
		{
			include_once $conffile;
			if (! empty($dolibarr_main_db_type) && ! empty($dolibarr_main_document_root))
			{
				if (! file_exists($dolibarr_main_document_root."/core/lib/admin.lib.php"))
				{
				    print '<font class="error">A '.$conffiletoshow.' file exists with a dolibarr_main_document_root to '.$dolibarr_main_document_root.' that seems wrong. Try to fix or remove the '.$conffiletoshow.' file.</font><br>'."\n";
				    dol_syslog("A '" . $conffiletoshow . "' file exists with a dolibarr_main_document_root to " . $dolibarr_main_document_root . " that seems wrong. Try to fix or remove the '" . $conffiletoshow . "' file.", LOG_WARNING);
				}
				else
				{
                    require_once $dolibarr_main_document_root.'/core/lib/admin.lib.php';

    				// $conf is already instancied inside inc.php
    				$conf->db->type = $dolibarr_main_db_type;
    				$conf->db->host = $dolibarr_main_db_host;
    				$conf->db->port = $dolibarr_main_db_port;
    				$conf->db->name = $dolibarr_main_db_name;
    				$conf->db->user = $dolibarr_main_db_user;
    				$conf->db->pass = $dolibarr_main_db_pass;
                    $db=getDoliDBInstance($conf->db->type,$conf->db->host,$conf->db->user,$conf->db->pass,$conf->db->name,$conf->db->port);
    				if ($db->connected && $db->database_selected)
    				{
    					$ok=true;
    				}
                }
			}
		}

		// If a database access is available, we set more variable
		if ($ok)
		{
			if (empty($dolibarr_main_db_encryption)) $dolibarr_main_db_encryption=0;
			$conf->db->dolibarr_main_db_encryption = $dolibarr_main_db_encryption;
			if (empty($dolibarr_main_db_cryptkey)) $dolibarr_main_db_cryptkey='';
			$conf->db->dolibarr_main_db_cryptkey = $dolibarr_main_db_cryptkey;

			$conf->setValues($db);
			// Current version is $conf->global->MAIN_VERSION_LAST_UPGRADE
			// Version to install is DOL_VERSION
			$dolibarrlastupgradeversionarray=preg_split('/[\.-]/',isset($conf->global->MAIN_VERSION_LAST_UPGRADE) ? $conf->global->MAIN_VERSION_LAST_UPGRADE : (isset($conf->global->MAIN_VERSION_LAST_INSTALL)?$conf->global->MAIN_VERSION_LAST_INSTALL:''));
			$dolibarrversiontoinstallarray=versiondolibarrarray();
		}

		// Show title
		if (! empty($conf->global->MAIN_VERSION_LAST_UPGRADE) || ! empty($conf->global->MAIN_VERSION_LAST_INSTALL))
		{
			print $langs->trans("VersionLastUpgrade").': <b><font class="ok">'.(empty($conf->global->MAIN_VERSION_LAST_UPGRADE)?$conf->global->MAIN_VERSION_LAST_INSTALL:$conf->global->MAIN_VERSION_LAST_UPGRADE).'</font></b><br>';
			print $langs->trans("VersionProgram").': <b><font class="ok">'.DOL_VERSION.'</font></b>';
			//print ' '.img_warning($langs->trans("RunningUpdateProcessMayBeRequired"));
			print '<br>';
			print '<br>';
		}
		else print "<br>\n";

		print $langs->trans("InstallEasy")." ";
		print $langs->trans("ChooseYourSetupMode");

        print '<br /><br />';

		$foundrecommandedchoice=0;

        $available_choices = array();
        $notavailable_choices = array();

		// Show first install line
		$choice = '<tr class="listofchoices"><td class="listofchoices nowrap" align="center"><b>'.$langs->trans("FreshInstall").'</b>';
		$choice .= '</td>';
		$choice .= '<td class="listofchoices">';
		$choice .= $langs->trans("FreshInstallDesc");
		if (empty($dolibarr_main_db_host))	// This means install process was not run
		{
            $choice .= '<br>';
			//print $langs->trans("InstallChoiceRecommanded",DOL_VERSION,$conf->global->MAIN_VERSION_LAST_UPGRADE);
			$choice .= '<div class="center"><div class="ok">'.$langs->trans("InstallChoiceSuggested").'</div></div>';
			// <img src="../theme/eldy/img/tick.png" alt="Ok"> ';
			$foundrecommandedchoice=1;	// To show only once
		}

        $choice .= '</td>';
        $choice .= '<td class="listofchoices" align="center">';
		if ($allowinstall)
		{
            $choice .= '<a class="button" href="fileconf.php?selectlang='.$setuplang.'">'.$langs->trans("Start").'</a>';
		}
		else
		{
            $choice .= $langs->trans("InstallNotAllowed");
		}
        $choice .= '</td>';
        $choice .= '</tr>'."\n";

        if ($allowinstall) {
            $available_choices[] = $choice;
        } else {
            $notavailable_choices[] = $choice;
        }

		// Show upgrade lines
		$allowupgrade=true;
		if (empty($dolibarr_main_db_host))	// This means install process was not run
		{
			$allowupgrade=false;
		}
		if (defined("MAIN_NOT_INSTALLED")) $allowupgrade=false;
		if (GETPOST('allowupgrade')) $allowupgrade=true;
		$migrationscript=array(	array('from'=>'3.0.0', 'to'=>'3.1.0'),
								array('from'=>'3.1.0', 'to'=>'3.2.0'),
								array('from'=>'3.2.0', 'to'=>'3.3.0'),
								array('from'=>'3.3.0', 'to'=>'3.4.0'),
								array('from'=>'3.4.0', 'to'=>'3.5.0'),
								array('from'=>'3.5.0', 'to'=>'3.6.0'),
								array('from'=>'3.6.0', 'to'=>'3.7.0'),
								array('from'=>'3.7.0', 'to'=>'3.8.0'),
		                        array('from'=>'3.8.0', 'to'=>'3.9.0'),
		                        array('from'=>'3.9.0', 'to'=>'4.0.0'),
		                        array('from'=>'4.0.0', 'to'=>'5.0.0'),
		                        array('from'=>'5.0.0', 'to'=>'6.0.0')
		);

		$count=0;
		foreach ($migrationscript as $migarray)
		{

            $choice = '';

			$count++;
            $recommended_choice = false;
            $version=DOL_VERSION;
			$versionfrom=$migarray['from'];
            $versionto=$migarray['to'];
            $versionarray=preg_split('/[\.-]/',$version);
            $dolibarrversionfromarray=preg_split('/[\.-]/',$versionfrom);
            $dolibarrversiontoarray=preg_split('/[\.-]/',$versionto);
            // Define string newversionxxx that are used for text to show
            $newversionfrom=preg_replace('/(\.[0-9]+)$/i','.*',$versionfrom);
            $newversionto=preg_replace('/(\.[0-9]+)$/i','.*',$versionto);
            $newversionfrombis='';
            if (versioncompare($dolibarrversiontoarray,$versionarray) < -2)	// From x.y.z -> x.y.z+1
            {
            	$newversionfrombis=' '.$langs->trans("or").' '.$versionto;
            }

            if ($ok)
            {
                if (count($dolibarrlastupgradeversionarray) >= 2)	// If a database access is available and last upgrade version is known
                {
                    // Now we check if this is the first qualified choice
                    if ($allowupgrade && empty($foundrecommandedchoice) &&
                        (versioncompare($dolibarrversiontoarray,$dolibarrlastupgradeversionarray) > 0 || versioncompare($dolibarrversiontoarray,$versionarray) < -2)
                    )
                    {
                        $foundrecommandedchoice=1;	// To show only once
                        $recommended_choice = true;
                    }
                }
                else {
                    // We can not recommand a choice.
                    // A version of install may be known, but we need last upgrade.
                }
            }

            $choice .= '<tr class="listofchoices '.($recommended_choice ? 'choiceselected' : '').'">';
            $choice .= '<td class="listofchoices nowrap" align="center"><b>'.$langs->trans("Upgrade").'<br>'.$newversionfrom.$newversionfrombis.' -> '.$newversionto.'</b></td>';
            $choice .= '<td class="listofchoices">';
            $choice .= $langs->trans("UpgradeDesc");

            if ($recommended_choice)
            {
                $choice .= '<br>';
                //print $langs->trans("InstallChoiceRecommanded",DOL_VERSION,$conf->global->MAIN_VERSION_LAST_UPGRADE);
                $choice .= '<div class="center"><div class="ok">'.$langs->trans("InstallChoiceSuggested").'</div>';
                if ($count < count($migarray))	// There is other choices after
                {
                    print $langs->trans("MigrateIsDoneStepByStep",DOL_VERSION);
                }
                $choice .= '</div>';
            }

            $choice .= '</td>';
            $choice .= '<td class="listofchoices" align="center">';
			if ($allowupgrade)
			{
				$disabled=false;
				if ($foundrecommandedchoice == 2)
				{
					$disabled=true;
				}
				if ($foundrecommandedchoice == 1)
				{
					$foundrecommandedchoice = 2;
				}
				if ($disabled) $choice .= '<span class="buttonDisable runupgrade"'.($disabled?' disabled="disabled"':'').' href="#">'.$langs->trans("NotAvailable").'</span>';
				else $choice .= '<a class="button runupgrade"'.($disabled?' disabled="disabled"':'').' href="upgrade.php?action=upgrade'.($count<count($migrationscript)?'_'.$versionto:'').'&amp;selectlang='.$setuplang.'&amp;versionfrom='.$versionfrom.'&amp;versionto='.$versionto.'">'.$langs->trans("Start").'</a>';
			}
			else
			{
                $choice .= $langs->trans("NotAvailable");
			}
            $choice .= '</td>';
            $choice .= '</tr>'."\n";

            if ($allowupgrade) {
                $available_choices[] = $choice;
            } else {
                $notavailable_choices[] = $choice;
            }
		}

		// If there is no choice at all, we show all of them.
		if (empty($available_choices))
		{
			$available_choices=$notavailable_choices;
			$notavailable_choices=array();
		}

        // Array of install choices
        print '<table width="100%" class="listofchoices">';
        foreach ($available_choices as $choice) {
            print $choice;
        }

        print '</table>';

        if (count($notavailable_choices)) {

            print '<br />';
            print '<div id="AShowChoices">';
            print '<img src="../theme/eldy/img/1downarrow.png"> <a href="#">'.$langs->trans('ShowNotAvailableOptions').'</a>';
            print '</div>';

            print '<div id="navail_choices" style="display:none">';
            print '<br />';
            print '<table width="100%" class="listofchoices">';
            foreach ($notavailable_choices as $choice) {
                print $choice;
            }

            print '</table>';
            print '</div>';
        }

	}

}

print '<script type="text/javascript">

$("div#AShowChoices a").click(function() {

    $("div#navail_choices").toggle();

    if ($("div#navail_choices").css("display") == "none") {
        $(this).text("'.$langs->trans('ShowNotAvailableOptions').'");
        $(this).parent().children("img").attr("src", "../theme/eldy/img/1downarrow.png");
    } else {
        $(this).text("'.$langs->trans('HideNotAvailableOptions').'");
        $(this).parent().children("img").attr("src", "../theme/eldy/img/1uparrow.png");
    }

});

/*
$(".runupgrade").click(function() {
	return confirm("'.dol_escape_js($langs->transnoentitiesnoconv("WarningUpgrade"), 0, 1).'");
});
*/

</script>';

dolibarr_install_syslog("--- check: end");
pFooter(1);	// Never display next button

